Which is the smallest flightless bird?

Q. Which is the smallest flightless bird?

A

Inaccessible Island rail

B

Penguin

C

Ostrich

D

Kiwi

Solution:

Flightless birds are birds that through evolution lost the ability to fly.
The smallest flightless bird is the Inaccessible Island rail (length 12.5 cm, weight 34.7 g).
The largest (both heaviest and tallest) flightless bird, which is also the largest living bird, is the ostrich (2.7 m, 156 kg).

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